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    /* TextDialog.java
     *
     * created: Mon Jan 11 1999
     *
     * This file is part of Artemis
     *
     * Copyright (C) 1998,1999,2000  Genome Research Limited
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License
     * as published by the Free Software Foundation; either version 2
     * of the License, or (at your option) any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
     *
     * $Header: //tmp/pathsoft/artemis/uk/ac/sanger/artemis/components/TextDialog.java,v 1.1 2004-06-09 09:47:52 tjc Exp $
     **/
    
    package uk.ac.sanger.artemis.components;
    
    import java.awt.*;
    import java.awt.event.*;
    import java.util.Vector;
    
    import javax.swing.*;
    
    /**
     *  A popup TextField JDialog with an OK and a Cancel button.
     *
     *  @author Kim Rutherford
     *  @version $Id: TextDialog.java,v 1.1 2004-06-09 09:47:52 tjc Exp $
     **/
    
    public class TextDialog extends JDialog {
      /**
       *  Create a new TextDialog component with the given prompt. Other
       *  components can listen for TextDialogEvent object.
       *  @param parent The parent window.
       *  @param prompt A message that is displayed in the component beside the
       *    TextArea that the user types into.  This String is also used as the
       *    JFrame title.
       *  @param width The width of the new TextField.
       *  @param initial_text The initial text to put in the TextField.
       **/
      public TextDialog (final JFrame parent,
                         final String prompt,
                         final int width,
                         final String initial_text) {
        super (parent, prompt, true);
    
        getContentPane ().add (new JLabel (prompt), "North");
    
        final JPanel panel = new JPanel ();
    
        panel.add (ok_button);
        ok_button.addActionListener (new ActionListener () {
          public void actionPerformed (ActionEvent e) {
            text = text_field.getText ();
            TextDialog.this.dispose ();
          }
        });
    
        panel.add (cancel_button);
        cancel_button.addActionListener (new ActionListener () {
          public void actionPerformed (ActionEvent e) {
            text = null;
            TextDialog.this.dispose ();
          }
        });
    
        getContentPane ().add (panel, "South");
    
        text_field = new JTextField (initial_text, width);
    
        text_field.addKeyListener (new KeyAdapter () {
          public void keyTyped(final KeyEvent e) {
            if (e.getKeyChar () == '\n') {
              text = text_field.getText ();
              TextDialog.this.dispose ();
            }
          }
        });
    
        getContentPane ().add (text_field, "Center");
    
        pack ();
    
        final Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
        setLocation (new Point ((screen.width - getSize ().width) / 2,
                                (screen.height - getSize ().height) / 2));
      }
    
      /**
       *  Wait for a user action then return the text if the user hit OK or null
       *  if the user hit Cancel.
       **/
      public String getText () {
        setVisible (true);
    
        return text;
      }
    
      private final JButton ok_button = new JButton ("OK");
      private final JButton cancel_button = new JButton ("Cancel");
      private JTextField text_field = null;
    
      /**
       *  Set to null if and only if the user cancels the dialog, otherwise
       *  contains the text that the user entered.
       **/
      private String text = null;
    }